What does the Office of Civil Rights enforce?

The Office of Civil Rights (OCR) is primarily responsible for enforcing federal civil rights laws and ensuring compliance with the Health Insurance Portability and Accountability Act (HIPAA) concerning the privacy and security of individuals' health information. This includes addressing civil complaints related to violations of privacy rights and ensuring that entities follow regulations designed to protect sensitive health information.

By enforcing privacy and security measures, the OCR handles a range of issues, including improper disclosures of health records and breaches of confidentiality, which directly relate to the rights of individuals regarding their personal health information. Hence, the focus of the OCR aligns with promoting a secure environment that safeguards individuals' health data, making this answer correct in the context of the question.

Other options highlight areas related to healthcare but do not specifically align with the responsibilities of the OCR. Criminal investigations pertain to legal enforcement beyond civil rights, billing errors deal more with financial compliance rather than civil rights enforcement, and clinical data accuracy relates to clinical operations rather than privacy and security issues that the OCR mandates.